Imaging systems and imaging methods

An imaging system comprising:

• an antenna array comprising a plurality of antennas configured to transmit electromagnetic energy towards a target imaging volume and receive electromagnetic energy from the target imaging volume, and wherein the antennas are configured to provide an imaging aperture having a first region comprising a plurality of sampling points that are at least substantially uniformly spaced from adjacent ones of the sampling points within the first region and a second region comprising a plurality of sampling points that are not uniformly spaced from adjacent ones of the sampling points within the second region;
• a data acquisition system coupled with the antenna array and configured to output radar data for the sampling points, and wherein the radar data results from the transmission and reception of the electromagnetic energy with respect to the target imaging volume;
• and
• processing circuitry coupled with the data acquisition system, and wherein the processing circuitry is configured to focus the radar data to generate an image of the target imaging volume, and wherein the processing circuitry is configured to weight the radar data of the sampling points within the first region at least substantially the same during the focusing and to weight the radar data of the sampling points within the second region differently during the focusing.

An imaging system comprising:

• processing circuitry configured to:
• access radar data for a plurality of sampling points at a plurality of different locations of an imaging aperture, and wherein the radar data results from the transmission and reception of electromagnetic energy via an antenna array with respect to a target imaging volume;
• access a plurality of different weightings that correspond to different ones of the sampling points of the imaging aperture;
• focus the radar data of the sampling points to generate an image of the target imaging volume;
• and
• wherein the processing circuitry is configured to use the different weightings of the sampling points to focus the radar data of respective ones of the sampling points.